King-bolt for wagons



Y 2 Sheets-Sheet 1.

(No Model.) 7 Q M. CONRAD.

KING BOLT FOR WAGONS.

Patented Nov. 14,1882.

7 (No Model.) 2 Sheets-Sheet 2.

M. CONRAD. 7

KING BOL'T FOR WAGONS.

No. 267,327; Patented Nov. 14, 1882.

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Ilnrrnn STATES PATENT @FFICE.

MARTIN CONRAD, OF CHICAGO, ILLINOIS.

KING-BOLT FOR WAGONS.

SPECIFICATION forming part of Letters Patent No. 267,327, dated November14 1882. Application filed September 13, 1882. (No model.)

To all whom it may concern:

Be it known that I, MARTIN CONRAD, of Chicago, in the county of Cook andState of Illinois, have invented certain new and useful Improvements inWagons; and I do hereby declare that the following is a full, clear, andexact description thereof, reference being had to the accoi-npanyingdrawings, and to the letters of reference marked thereon,which form apart of this specification.

This invention relates to king-bolts for connecting tilting bolsters infront gears of wagons; and it consists in a king-bolt, having acylindric T-head, mounted, as hereinafter described, in a wagon,withsaid head transverse to the bolster or axle, whereby the said bolt formsboth a horizontal axis in such direction of the head and a vertical axison the shank.

In the drawings, Figure 1 is a perspective view of the king-boltdetached. Fig. 2 is afront elevation of the axle, sand-board, bolster,and reach of a heavy wagon, having the kingbolt of Fig. 1 applied toconnect these parts in accordance with my improvement. Fig. 3 is acentral vertical section of the parts shown in Fig. 2, taken through thevertical axis of the king-bolt. Fig. at is a central verticallongitudinal section of the bolster and its frictionplate, showing theelongation of the bolt-hole in the latter when the head of the bolt isse-' cured to the bolster. Fig. 5 is a front elevation of a sand-boardand bolster connected by the king-bolt described, but having thebolthead pivoted in the sand-board and its shank directed upward throughthe bolster, instead of downward, as shown in the preceding figures.Figure 6 is a central vertical transverse section of the bolster andsand-board, showing the king-bolt shank upwardly directed and providedwith a spring calculated to normally hold the bolster parallel with thesand-board and axle.

In said drawings, A is the axle, B is the bolster, and O is thesand-board, of aheavy wagon. D is the reach, shown only in Figs. 2 and3.

In the use of my invention it is intended to provide for a rocking ortilting movement of the bolster, whereby said bolster may be retained inthe plane of the bed or of the rear axle, while the front axle is freeto tilt in conformity with the surface of an uneven road. To favor therocking movements of the bolster and axle relative to each othernecesssary to the object in view, the king-bolt K is provided andmounted in the parts mentioned, as will now be described. Said king-boltK consists of the shank 8, provided with a oylindric transverse head,It. The shank s performs the ordinary function of a vertical axis forthe parts joined thereby, and the head It is intended to furnish ahorizontalaxis t-ransverseto the parts joined, whereby the latter, whilebeing appropriately held to each other, may rock or tilt, as re--quired. To this end the head It is pivoted transversely in either thebolster or the sandboard or axle, immediately beneath the surfacethereof, which is in bearing with the adjacent and opposing part, andthe shank extends vertically into or through the latter, in the mannerof any ordinary king-bolt. In Figs. 2, 3, and 4 the head of theking-bolt is pivoted in the bolster, and its shank extends downward intoand through the adjacent sandboard and the reach and axle.

As a means ofsecuring the head It in the bolster a transverse groove iscut in the lower face of the bolster, of suitable depth to admit thehead, and the friction-plate B, centrally apertured at b, Fig. 4, toreceive the shank s, is bolted or otherwise fastened on said lower faceof the bolster over the head It. As afurther means of holding thebolt-head in place the pivot-plates P P may be fastened to the front andrear faces of the bolster, being apertured near their lower edges toadmit and afford pivotal bearin gs for the ends of the head h. In orderto allow the required vibratory movement of the bolt thus secured theaperture b in the friction-plate B is elongated in the direction of thelength of the holster, or transversely to the head It, as plainlyindicated in Fig. 4.

When the king-bolt is pivoted in the sandboard and its shank is directedupwardly, as shown in Figs. 5 and 6, the friction-plate O is aperturedand applied over the bolt-head, as above described, of the plate B, andthe pivot plates P P, if employed, are of course attatched to thesand-board. This last mentioned arrangement is applicable in wagonswithout a reach, or in those having a separate bolt from the bolt K forconnecting the reach with the axle.

1n the use of the T-headed king-bolt described it is evident that thebolster will rock on the edges of the friction-plates B O, and that theshank s will therefore draw longitudinally in the hole it occupies. Inorder to normally but yieldingly hold the bolster in fair bearing uponand parallel with the sand-board a spring may be applied to the bolt, asillustrated in Fig. (3, or otherwise. In said figure of the drawings thehole I) in the bolster for the accommodation of the shank s is enlarged,and said shank is surrounded by an expanding coiled spring, K,which isconfined between the friction-plate B and the nut 70, threaded on thetop of the shank s, and of size to fairly fill but freely work in thepassage I). Said passage may in this or any case be advantageously linedwith a metal tube. An equivalent spring in the form of a bent plate maybe applied to the king-bolt, arranged as in Fig. 2, by being appliedbetween the lower surface of the axle and a suitable head or shoulder onthe lower protruding end of the shank 8.

So far as this invention is concerned the sand-board and axle may beregarded as one.

I claim as my invention 1. In combination with the front axle and arocking bolster resting centrally upon the axle, the king-boltdescribed, having a straight head formed at right angles with the shank,said head being arranged and connected as a transverse pivot to one orthe other of the firstabove-named parts beneath its bearing-face, andits shank being arranged as a vertical pivot, substantially asdescribed, and for the purposes set forth.

2. The eonibinatiomwith the axle and tilting bolster, the latter rockingupon the former on a line exterior to its vertical axis, of a T-headedking-bolt, K, having its head seated transversely beneath thebearing-face of one of these parts and its shank directed through theother part, and a spring, K, together with means. for retaining thespring, substantially as and for the purposes set forth.

3. In combination with the axle and bolster, the T-headed bolt K, havingits head seated beneath the bearing-surface of one of these parts, andpivot-plate 1, arranged and operating substantially as described.

In testimony that I claim the foregoing as my invention, I afiix mysignature in presence of two witnesses.

MARTIN (JON tAD.

Witnesses:

M. E. DAYTON, PETER J. ELLERT.

